The easiest way to implement the search engine on a page is through Javascript. You simply put a remote Javascript include on your page and pass it the parameters you want, and the Javascript engine does the rest. In its simplest form:

The script=search_index in the querystring tells the script that you want to display the search engine; the affid=1001 tells the script that your affiliate id number is 1001. All you need to do is to replace the 1001 with your affiliate id number.